Tutor profile: Helena P.
Subject: Basic Math
32 is 40 percent of what number?
A) 80 B) 12.8 C) 800 D) 128
Subject: Basic Chemistry
What is the structure of an atom?
An atom consists of three main subatomic particles. In its center is the nucleus. The first two particles, protons (positively charged) and neutrons (neutral particles) are inside the nucleus. Orbiting the nucleus are electrons (negatively charged) which is the third subatomic particle making up the parts of an atom.
What is the role of the liver in the human digestive system?
The liver plays a major role in the digestive process. One of its main jobs is to secrete bile into the small intestine. This allows the body to break down fats as well as certain vitamins.
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